C-addiction":3i6gklq8 said:
... although the plates give and tend to slide around a bit.
The "give" may be because yours are built and/or failing like mine did (which may not be how they build them now). Mine weren't to the "giving" stage yet, but would have been shortly. I found a couple of hairline cracks on the underside corresponding roughly with where one would step in from the cockpit. Figured I would enlarge them a bit, fiberglass, and be done with it. However...
As I opened up the crack I found wet core, and worse, it just went on and on. I ended up dissecting most of the board (due to the wet core and what I was finding), and I believe that certain characteristics of the construction caused both the cracks and the extreme water spread. I've been meaning to write this up, but in brief:
If your boards are like mine, you will see fore-and-aft "steps" or levels on the underside. This is so they can be thicker in the center and thinner where the hull starts to curve up toward the sides. The way mine were built, each "level" was a separate piece of core, and there were very large gaps running the full length between each piece, corresponding with the level changes. These were not filled with anything. The fiberglass was all chopped mat, from what I could tell (weak).
So, the large gaps created weak-point, "lines" the length of the floorboards, the fiberglass was weak anyway, and this allowed the easy formation of longitudinal cracks. The large gaps also allowed any water that found its way into said cracks (not hard when it is the bottom of a floorboard) to travel easily through the floorboard, soaking the core as it went. Wet core, gaps, etc. will all let the floorboard "give," instead of being firm as it should be.
I bought my floorboards used, but they had mostly been stored in a garage. After very little use, I found the cracks, opened them up, and now I'm not sure whether I will repair them or just build my own. I do like the look and fit. It
It would be nice if they were putting them together better now (and they very well may be).